US2649242A - Variable capacity blower - Google Patents

Variable capacity blower Download PDF

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Publication number
US2649242A
US2649242A US234551A US23455151A US2649242A US 2649242 A US2649242 A US 2649242A US 234551 A US234551 A US 234551A US 23455151 A US23455151 A US 23455151A US 2649242 A US2649242 A US 2649242A
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Prior art keywords
blower
rotor
air
variable capacity
gate
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Expired - Lifetime
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US234551A
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El Roy L Payne
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PAYNE BEVERLY Manufacturing CO
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PAYNE BEVERLY Manufacturing CO
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Priority to US234551A priority Critical patent/US2649242A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
    • F24H3/065—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators using fluid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/009—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by bleeding, by passing or recycling fluid

Definitions

  • My invention relates to variable capacity blowers and is a continuatioh in-part of my copending patent application, Serial No. 220,447, filed April 11, 1951.
  • blower which is particularly suitable for use in conjunction with air heating '01 conditioning systems wherein the supply of air is varied commensurate with the change in theamount of heat added or subtracted in order that the-temperature of the air as discharged into the room or other region to be heated or cooled, will not differ extremely from the desired ternperature of the room or other region.
  • blower of this type which lends itself to simple means of regulation or control from a remote point or in operative association with thermostats or other control means with which the blower is used.
  • blower of this type which does not require any variable speed drive or change in configuration of the rotor or stator blades in order to vary its effective output.
  • Figure l is a diagrammatical View of a furnace incorporating my blower.
  • Figure 2 is an enlarged partial section, partial elevational view of my blower and associated mechanism viewed in the opposite direction from Figure 1.
  • Figure 3 is a perspective view of my blower.
  • Blowers of this type include a shell I of scroll or spiral outline with parallel end walls. One or both of these end walls are provided with intake openings 2. An outlet opening 3 is directed substantially tangentially from the spiral contoured walls of the shell.
  • a rotor 1 is journaled within the shell.
  • the rotor comprises an annular series of blades defining an open cylinder, suitably supported from a central shaft 5 which, in turn, is supported by an appropriate spider or bracket structure from the stationary parts of the blower.
  • the shell i of the blower is usually designed so that, starting at one side of the discharge opening 3, the space between the blower shell and rotor progressively increases; hence the reason for the scroll or spiral form of the shell.
  • the rotor is driven by a suitable electric motor 1 through a belt drive 8.
  • the structure thus described may be considered as conventional.
  • I provide a bypass port H located adjacent to and substantially at right angles to the outlet opening 3.
  • the bypass port H thus confronts the rotor t.
  • the bypass port is controlled by a gate I2.
  • the gate is supported by a hinge [3 located at the side of the port adj acentthe outlet opening and is preferably disposed within the shell i. The gate thus swings inwardly toward the rotor and its open end is directed into the air stream issuing from the rotor. Thus, a portion of air will be deflected by the gate outwardly through the bypass port.
  • the margins of the gate may be provided with a gasket i l so as to seal substantially against the margins of the bypass opening when the gate is closed.
  • the hinge may include a shaft [5 protruding from an end of the shell and equipped with an operating arm it.
  • the operating arm is adjustably connected to a rod ll which joins a second operating arm It connected to a control motor IS.
  • the control motor may take various forms, depending upon the type of control mechanism used in association with the furnace or air conditioning system, employing my variable capacity blower, In the present instance, the motor is shown as a small synchronous motor capable of stalling without injury. Thus, the motor may open the gate until a stop (not shown) is engaged to limit further movement.
  • a spring 26 may effect return movement.
  • FIG. 1 A typical installation of my variable capacity blower is shown in Figure 1 in which the blower is shown as mounted in an air intake compartment A with its discharge end directed into a heat exchanger B involving fiow passages around a burner unit C. It will be observed that on opening of the gate [2, a portion of the air is bypassed and caused to recirculate in the intake chamber rather than be delivered to the heat exchanger. Thus, the effective output of the blower is reduced.
  • a variable capacity blower construction for air heating and conditioning systems comprising: an air intake compartment, a duct separated from the air intake compartment, and a blower mounted in said air intake compartment and discharging into said duct, said blower comprising: a cylindrical cage-type rotor; a scroll shell enveloping said rotor and defining an axially directed intake communicating between said intake compartment and the interior of said rotor, and an outlet substantially tangent to said rotor isolated from said intake compartment and communicating with said duct; said shell having a bypass opening adjacent said outlet communicating with said intake compartment to permit recirculation of air from said inlet to said bypass opening and back to said intake compartment; and a gate hinged to a margin of said bypass opening and directed into the air stream issuing from said rotor to deflect a portion of the air stream into said intake compartment.
  • a variable capacity blower construction for air heating and conditioning systems comprising: an air intake compartment, a duct separated from the air intake compartment, and a blower mounted in said air intake compartment and discharging into said duct, said blower comprising: a cylindrical cage-type rotor; a scroll shell enveloping said rotor and defining an axially directed intake communicating between said intake compartment and the interior of said rotor, and an outlet substantially tangent to said rotor isolated from said intake compartment and communicating with said duct; said shell having a bypass opening adjacent said outlet communicating with said intake compartment to permit recirculation of air from said inlet to said bypass opening and back to said intake compartment; a gate hinged to a margin of said bypass opening and directed into the air stream issuing from said rotor to deflect a portion of the air stream into said intake compartment; and remote control means for operating said gate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Aug. 18, 1953 EL. ROY L. PAYNE VARIABLE CAPACITY BLOWER Filed June 30, 1951 IN VEN TOR. 56 Wayne ATTQZLNEYS Patented Aug. 18, 1953 STATES .ATEN T ()F F ICE Application June so, 1951, serial No. 234,551
2 Claims.
My invention relates to variable capacity blowers and is a continuatioh in-part of my copending patent application, Serial No. 220,447, filed April 11, 1951.
. included in the objects of my invention are:
First, to provide a blower which is particularly suitable for use in conjunction with air heating '01 conditioning systems wherein the supply of air is varied commensurate with the change in theamount of heat added or subtracted in order that the-temperature of the air as discharged into the room or other region to be heated or cooled, will not differ extremely from the desired ternperature of the room or other region.
Second, to provide a blower of this type wherein a regulated portion of the air entering the blower is bypassed before discharge from the outlet end of the blower.
Third, to provide a blower of this type which lends itself to simple means of regulation or control from a remote point or in operative association with thermostats or other control means with which the blower is used.
Fourth, to provide a blower of this type which does not require any variable speed drive or change in configuration of the rotor or stator blades in order to vary its effective output.
With the above and other objects in view as may appear hereinafter, reference is directed to the accompanying drawings in which:
Figure l is a diagrammatical View of a furnace incorporating my blower.
Figure 2 is an enlarged partial section, partial elevational view of my blower and associated mechanism viewed in the opposite direction from Figure 1.
Figure 3 is a perspective view of my blower.
Various blowers of the squirrel cage type can be adapted to my invention. Blowers of this type include a shell I of scroll or spiral outline with parallel end walls. One or both of these end walls are provided with intake openings 2. An outlet opening 3 is directed substantially tangentially from the spiral contoured walls of the shell.
A rotor 1 is journaled within the shell. The rotor comprises an annular series of blades defining an open cylinder, suitably supported from a central shaft 5 which, in turn, is supported by an appropriate spider or bracket structure from the stationary parts of the blower. The shell i of the blower is usually designed so that, starting at one side of the discharge opening 3, the space between the blower shell and rotor progressively increases; hence the reason for the scroll or spiral form of the shell. The rotor is driven by a suitable electric motor 1 through a belt drive 8. The structure thus described may be considered as conventional.
In the exercise of my invention, I provide a bypass port H located adjacent to and substantially at right angles to the outlet opening 3. The bypass port H thus confronts the rotor t. The bypass port is controlled by a gate I2. I The gate is supported by a hinge [3 located at the side of the port adj acentthe outlet opening and is preferably disposed within the shell i. The gate thus swings inwardly toward the rotor and its open end is directed into the air stream issuing from the rotor. Thus, a portion of air will be deflected by the gate outwardly through the bypass port. The margins of the gate may be provided with a gasket i l so as to seal substantially against the margins of the bypass opening when the gate is closed.
It will be observed that the effective output from the blower may be varied in proportion to the position of the gate. This arrangement lends itself to effective control by remotely responsive means. To accomplish this, the hinge may include a shaft [5 protruding from an end of the shell and equipped with an operating arm it. The operating arm is adjustably connected to a rod ll which joins a second operating arm It connected to a control motor IS. The control motor may take various forms, depending upon the type of control mechanism used in association with the furnace or air conditioning system, employing my variable capacity blower, In the present instance, the motor is shown as a small synchronous motor capable of stalling without injury. Thus, the motor may open the gate until a stop (not shown) is engaged to limit further movement. A spring 26 may effect return movement.
A typical installation of my variable capacity blower is shown in Figure 1 in which the blower is shown as mounted in an air intake compartment A with its discharge end directed into a heat exchanger B involving fiow passages around a burner unit C. It will be observed that on opening of the gate [2, a portion of the air is bypassed and caused to recirculate in the intake chamber rather than be delivered to the heat exchanger. Thus, the effective output of the blower is reduced.
Having fully described my invention, it is to be understood that I do not wish to be limited to the details herein set forth, but my invention is of the full scope of the appended claims.
I claim: 1. A variable capacity blower construction for air heating and conditioning systems, comprising: an air intake compartment, a duct separated from the air intake compartment, and a blower mounted in said air intake compartment and discharging into said duct, said blower comprising: a cylindrical cage-type rotor; a scroll shell enveloping said rotor and defining an axially directed intake communicating between said intake compartment and the interior of said rotor, and an outlet substantially tangent to said rotor isolated from said intake compartment and communicating with said duct; said shell having a bypass opening adjacent said outlet communicating with said intake compartment to permit recirculation of air from said inlet to said bypass opening and back to said intake compartment; and a gate hinged to a margin of said bypass opening and directed into the air stream issuing from said rotor to deflect a portion of the air stream into said intake compartment.
2. A variable capacity blower construction for air heating and conditioning systems, comprising: an air intake compartment, a duct separated from the air intake compartment, and a blower mounted in said air intake compartment and discharging into said duct, said blower comprising: a cylindrical cage-type rotor; a scroll shell enveloping said rotor and defining an axially directed intake communicating between said intake compartment and the interior of said rotor, and an outlet substantially tangent to said rotor isolated from said intake compartment and communicating with said duct; said shell having a bypass opening adjacent said outlet communicating with said intake compartment to permit recirculation of air from said inlet to said bypass opening and back to said intake compartment; a gate hinged to a margin of said bypass opening and directed into the air stream issuing from said rotor to deflect a portion of the air stream into said intake compartment; and remote control means for operating said gate.
EL ROY L. PAYNE.
References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 771,461 Clifford Oct. 4, 1904 960,815 Carlisle June 7, 1910 1,503,089 Callahan July 29, 1924 2,014,507 Price Sept. 1'7, 1935 2,089,969 Kuenhold Aug. 17, 1937 2,240,779 Hunt May 6, 1941 2,376,172 Mueller May 17, 1945 2,413,150 McReynolds Dec. 24, 1946 2,476,543 Geissler July 19, 1949 FOREIGN PATENTS Number Country Date 114,100 Germany Oct. 11 1900
US234551A 1951-06-30 1951-06-30 Variable capacity blower Expired - Lifetime US2649242A (en)

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2808981A (en) * 1954-06-09 1957-10-08 Nat Radiator Company Universal foot for blower assembly
US2923349A (en) * 1956-12-11 1960-02-02 Tuck Aire Furnace Company Gas furnace construction
US2966297A (en) * 1957-07-05 1960-12-27 Essick Mfg Company Blower housing
US3023901A (en) * 1959-04-13 1962-03-06 Case Co J I Fan assembly for harvesting machinery
US3367368A (en) * 1966-05-12 1968-02-06 Gen Electric Outlet valve for dishwasher pump
US3811790A (en) * 1972-05-08 1974-05-21 Trane Co Air moving apparatus
US4749338A (en) * 1984-12-21 1988-06-07 Webasto-Werk W. Baier Gmbh & Co. Side channel blower
FR2754043A1 (en) * 1996-09-27 1998-04-03 Aldes Aeraulique Vent extractor regulator for building
US20060199524A1 (en) * 2005-02-22 2006-09-07 Hua-Chang Wang Positioning device in base for securing motor of blowers
US20080267764A1 (en) * 2007-04-27 2008-10-30 Delta Electronics, Inc. Fan
US20100078007A1 (en) * 2007-11-06 2010-04-01 Rbc Horizon, Inc. High Efficiency Furnace/Air Handler Blower Housing with a Side Wall Having an Exponentially Increasing Expansion Angle
US20110083832A1 (en) * 2009-10-14 2011-04-14 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. Heat dissipating blower
US20130243584A1 (en) * 2012-03-19 2013-09-19 Jung-Hun KUO Centrifugal fan
US9017011B2 (en) 2011-12-29 2015-04-28 Regal Beloit America, Inc. Furnace air handler blower with enlarged backward curved impeller and associated method of use
US20190072109A1 (en) * 2017-09-07 2019-03-07 Regal Beloit America, Inc. Centrifugal blower assembly and method for assembling the same
US11274677B2 (en) * 2018-10-25 2022-03-15 Revcor, Inc. Blower assembly
US11644045B2 (en) 2011-02-07 2023-05-09 Revcor, Inc. Method of manufacturing a fan assembly

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE114100C (en) *
US771461A (en) * 1903-06-08 1904-10-04 William Clifford Ventilating-fan structure.
US960815A (en) * 1909-10-26 1910-06-07 Thomas O Carlisle Cut-off for fans.
US1503089A (en) * 1919-06-02 1924-07-29 Michael J Callahan Ventilating unit
US2014507A (en) * 1931-01-12 1935-09-17 Thornton W Price Blower for furnaces
US2089969A (en) * 1933-10-07 1937-08-17 Forest City Foundries Company Warm air furnace structure
US2240779A (en) * 1939-04-29 1941-05-06 Wood Brothers Thresher Company Grain separator
US2376172A (en) * 1941-06-07 1945-05-15 Moritz L Mueller Heating apparatus
US2413150A (en) * 1945-01-09 1946-12-24 Great Nat Air Conditioning Com Remote control for evaporative coolers
US2476548A (en) * 1949-07-19 Preparation of triazinfliufitmlts

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE114100C (en) *
US2476548A (en) * 1949-07-19 Preparation of triazinfliufitmlts
US771461A (en) * 1903-06-08 1904-10-04 William Clifford Ventilating-fan structure.
US960815A (en) * 1909-10-26 1910-06-07 Thomas O Carlisle Cut-off for fans.
US1503089A (en) * 1919-06-02 1924-07-29 Michael J Callahan Ventilating unit
US2014507A (en) * 1931-01-12 1935-09-17 Thornton W Price Blower for furnaces
US2089969A (en) * 1933-10-07 1937-08-17 Forest City Foundries Company Warm air furnace structure
US2240779A (en) * 1939-04-29 1941-05-06 Wood Brothers Thresher Company Grain separator
US2376172A (en) * 1941-06-07 1945-05-15 Moritz L Mueller Heating apparatus
US2413150A (en) * 1945-01-09 1946-12-24 Great Nat Air Conditioning Com Remote control for evaporative coolers

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2808981A (en) * 1954-06-09 1957-10-08 Nat Radiator Company Universal foot for blower assembly
US2923349A (en) * 1956-12-11 1960-02-02 Tuck Aire Furnace Company Gas furnace construction
US2966297A (en) * 1957-07-05 1960-12-27 Essick Mfg Company Blower housing
US3023901A (en) * 1959-04-13 1962-03-06 Case Co J I Fan assembly for harvesting machinery
US3367368A (en) * 1966-05-12 1968-02-06 Gen Electric Outlet valve for dishwasher pump
US3811790A (en) * 1972-05-08 1974-05-21 Trane Co Air moving apparatus
US4749338A (en) * 1984-12-21 1988-06-07 Webasto-Werk W. Baier Gmbh & Co. Side channel blower
FR2754043A1 (en) * 1996-09-27 1998-04-03 Aldes Aeraulique Vent extractor regulator for building
US20060199524A1 (en) * 2005-02-22 2006-09-07 Hua-Chang Wang Positioning device in base for securing motor of blowers
US20080267764A1 (en) * 2007-04-27 2008-10-30 Delta Electronics, Inc. Fan
US8662832B2 (en) 2007-04-27 2014-03-04 Delta Electronics, Inc. Active air flow adjustable fan
US8206099B2 (en) * 2007-04-27 2012-06-26 Delta Electronics, Inc. Active air flow adjustable fan
US20100078007A1 (en) * 2007-11-06 2010-04-01 Rbc Horizon, Inc. High Efficiency Furnace/Air Handler Blower Housing with a Side Wall Having an Exponentially Increasing Expansion Angle
US20100263653A2 (en) * 2007-11-06 2010-10-21 Rbc Horizon, Inc. High Efficiency Furnace/Air Handler Blower Housing with a Side Wall Having an Exponentially Increasing Expansion Angle
US9513029B2 (en) 2007-11-06 2016-12-06 Regal Beloit America, Inc. High efficiency furnace/air handler blower housing with a side wall having an exponentially increasing expansion angle
US8550066B2 (en) * 2007-11-06 2013-10-08 Regal Beloit America, Inc. High efficiency furnace/air handler blower housing with a side wall having an exponentially increasing expansion angle
US20110083832A1 (en) * 2009-10-14 2011-04-14 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. Heat dissipating blower
US8602723B2 (en) * 2009-10-14 2013-12-10 Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. Heat dissipating blower
US11644045B2 (en) 2011-02-07 2023-05-09 Revcor, Inc. Method of manufacturing a fan assembly
US9017011B2 (en) 2011-12-29 2015-04-28 Regal Beloit America, Inc. Furnace air handler blower with enlarged backward curved impeller and associated method of use
US9068573B2 (en) * 2012-03-19 2015-06-30 Wistron Corporation Centrifugal fan
US20130243584A1 (en) * 2012-03-19 2013-09-19 Jung-Hun KUO Centrifugal fan
US20190072109A1 (en) * 2017-09-07 2019-03-07 Regal Beloit America, Inc. Centrifugal blower assembly and method for assembling the same
US10895266B2 (en) * 2017-09-07 2021-01-19 Regal Beloit America, Inc. Centrifugal blower assembly and method for assembling the same
US11274677B2 (en) * 2018-10-25 2022-03-15 Revcor, Inc. Blower assembly
US11732730B2 (en) 2018-10-25 2023-08-22 Revcor, Inc. Blower assembly

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